DQR ID | Subject | Data Streams Affected |
---|---|---|
D020927.1 | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
D050502.2 | SGP/SIRS/C1 - SWFANAL Data description error | sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1 |
D050502.8 | SGP/SIRS/E13 - SWFANAL Data description error | sgp1swfanalsirs1longE13.c1, sgp15swfanalsirs1longE13.c1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1996 | 0000 | 02/04/2000 | 2359 |
Subject: | SGP/ARSCL/C1 - ARSCL Cloud Bases and Low-level reflectivities |
DataStreams: | sgparscl1clothC1.c1, sgparsclbnd1clothC1.c1, sgparsclcbh1clothC1.c1 |
Description: | Prior to February 4, 2000, the ARSCL data set incorporated data from the Beaufort Laser Ceilometer as one of its inputs. Because of the BLC's high spatial resolution, this data was often chosen by ARSCL as the "CloudBaseBestEstimate" for boundary layer clouds. It was subsequently determined that the BLC cloud base was biased, with the BLC reporting cloud base heights that are 122 meters too high. The bias error will be corrected when the entire ARSCL data set is reprocessed as part of release_4. (The release version number is included the the netCDF global comments). This reprocessing will also include a small correction the the MMCR near-field reflectivities. This correction is less than 1 dB except for hydrometers within 200 meters of the surface. Thanks to Roger Marchand for helping bracket this problem. |
Measurements: | sgparsclbnd1clothC1.c1:
sgparsclcbh1clothC1.c1:
sgparscl1clothC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/1997 | 0000 | 12/10/2003 | 2359 |
Subject: | SGP/SIRS/C1 - SWFANAL Data description error |
DataStreams: | sgp1swfanalsirs1longC1.c1, sgp15swfanalsirs1longC1.c1 |
Description: | The long name attribute for the cloud effect fields incorrectly defines the cloud effect to be the difference between the clearskyfit and measured values: "Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ; The cloud effects are correctly calculated by subtracting the irradiance calculated in the clear sky fit from the measured irradiance. "Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ; NOTE: this is just a documentation error. The data are correctly calculated. |
Measurements: | sgp1swfanalsirs1longC1.c1:
sgp15swfanalsirs1longC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/1995 | 0000 | 10/28/2003 | 2359 |
Subject: | SGP/SIRS/E13 - SWFANAL Data description error |
DataStreams: | sgp1swfanalsirs1longE13.c1, sgp15swfanalsirs1longE13.c1 |
Description: | The long name attribute for the cloud effect fields incorrectly defines the cloud effect to be the difference between the clearskyfit and measured values: "Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ; The cloud effects are correctly calculated by subtracting the irradiance calculated in the clear sky fit from the measured irradiance. "Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ; NOTE: this is just a documentation error. The data are correctly calculated. |
Measurements: | sgp15swfanalsirs1longE13.c1:
sgp1swfanalsirs1longE13.c1:
|